libmakepkg: extract functions for source download and extraction

Signed-off-by: Allan McRae <allan@archlinux.org>

1 files changed, 127 insertions, 0 deletions

diff --git a/scripts/libmakepkg/source/git.sh.in b/scripts/libmakepkg/source/git.sh.in
new file mode 100644
index 00000000..4d2f2d7c
--- /dev/null
+++ b/scripts/libmakepkg/source/git.sh.in
@@ -0,0 +1,127 @@
+#!/bin/bash
+#
+#   git.sh - function for handling the download and "extraction" of Git sources
+#
+#   Copyright (c) 2015 Pacman Development Team <pacman-dev@archlinux.org>
+#
+#   This program is free software; you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation; either version 2 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+[[ -n "$LIBMAKEPKG_SOURCE_GIT_SH" ]] && return
+LIBMAKEPKG_SOURCE_GIT_SH=1
+
+
+LIBRARY=${LIBRARY:-'@libmakepkgdir@'}
+
+source "$LIBRARY/util/message.sh"
+source "$LIBRARY/util/pkgbuild.sh"
+
+
+download_git() {
+	local netfile=$1
+
+	local dir=$(get_filepath "$netfile")
+	[[ -z "$dir" ]] && dir="$SRCDEST/$(get_filename "$netfile")"
+
+	local repo=$(get_filename "$netfile")
+
+	local url=$(get_url "$netfile")
+	url=${url#git+}
+	url=${url%%#*}
+
+	if [[ ! -d "$dir" ]] || dir_is_empty "$dir" ; then
+		msg2 "$(gettext "Cloning %s %s repo...")" "${repo}" "git"
+		if ! git clone --mirror "$url" "$dir"; then
+			error "$(gettext "Failure while downloading %s %s repo")" "${repo}" "git"
+			plain "$(gettext "Aborting...")"
+			exit 1
+		fi
+	elif (( ! HOLDVER )); then
+		cd_safe "$dir"
+		# Make sure we are fetching the right repo
+		if [[ "$url" != "$(git config --get remote.origin.url)" ]] ; then
+			error "$(gettext "%s is not a clone of %s")" "$dir" "$url"
+			plain "$(gettext "Aborting...")"
+			exit 1
+		fi
+		msg2 "$(gettext "Updating %s %s repo...")" "${repo}" "git"
+		if ! git fetch --all -p; then
+			# only warn on failure to allow offline builds
+			warning "$(gettext "Failure while updating %s %s repo")" "${repo}" "git"
+		fi
+	fi
+}
+
+extract_git() {
+	local netfile=$1
+
+	local fragment=${netfile#*#}
+	if [[ $fragment = "$netfile" ]]; then
+		unset fragment
+	fi
+
+	local repo=${netfile##*/}
+	repo=${repo%%#*}
+	repo=${repo%%.git*}
+
+	local dir=$(get_filepath "$netfile")
+	[[ -z "$dir" ]] && dir="$SRCDEST/$(get_filename "$netfile")"
+
+	msg2 "$(gettext "Creating working copy of %s %s repo...")" "${repo}" "git"
+	pushd "$srcdir" &>/dev/null
+
+	local updating=0
+	if [[ -d "${dir##*/}" ]]; then
+		updating=1
+		cd_safe "${dir##*/}"
+		if ! git fetch; then
+			error "$(gettext "Failure while updating working copy of %s %s repo")" "${repo}" "git"
+			plain "$(gettext "Aborting...")"
+			exit 1
+		fi
+		cd_safe "$srcdir"
+	elif ! git clone "$dir" "${dir##*/}"; then
+		error "$(gettext "Failure while creating working copy of %s %s repo")" "${repo}" "git"
+		plain "$(gettext "Aborting...")"
+		exit 1
+	fi
+
+	cd_safe "${dir##*/}"
+
+	local ref=origin/HEAD
+	if [[ -n $fragment ]]; then
+		case ${fragment%%=*} in
+			commit|tag)
+				ref=${fragment##*=}
+				;;
+			branch)
+				ref=origin/${fragment##*=}
+				;;
+			*)
+				error "$(gettext "Unrecognized reference: %s")" "${fragment}"
+				plain "$(gettext "Aborting...")"
+				exit 1
+		esac
+	fi
+
+	if [[ $ref != "origin/HEAD" ]] || (( updating )) ; then
+		if ! git checkout --force --no-track -B makepkg $ref; then
+			error "$(gettext "Failure while creating working copy of %s %s repo")" "${repo}" "git"
+			plain "$(gettext "Aborting...")"
+			exit 1
+		fi
+	fi
+
+	popd &>/dev/null
+}